Onigiri

Requirements

• Ruby
  • I used ruby 3.0.2p107 (2021-07-07 revision 0db68f0233) [x86_64-darwin19], but older version may work.
  • It is implemented in pure Ruby, so no external libraries are required.

How to Run

$ ruby onigiri.rb examples/hello_world.onigiri

examples contains several example codes.

Details

The Onigiri Language is a dynamically-typed script language, having first-citizen comments. It has commentof operator that can retrieve a comment of variable. A comment can be modified in a similar manner to a way to change other values. Here is a small example:

# comment
var i = 0;
var ci = commentof i;
print(ci);
ci = ci + " of i";
print(ci);
print(commentof i);

The interpreter outputs all variables' comment in the end of execution like this:

=========================
i
-------------------------
comment of i

A comment to an assignment statement is appended to the existing comment of the left hand side variable.

# 1
var y;
# 2
y = y + 1;
# 3
y = y + 2;

print(commentof y);

This code outputs "1\n2\n3".

See GRAMMAR for detailed grammar.

License

MIT License Copyright 2021 nsfisis